LRF-3300S Ultrasonic Transit-time Flow meter
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1.2.
Wire Connecting
1.2.1 Power supply option
Customers should pay special attention to specify the desired power supply when wiring.
Factory standard power supply is 90 ~ 245 VAC.
To ensure the transmitter can work normally, please pay attention to the followings when wiring:
Ensure that power connections are made in accordance with the specifications shown on the transmitter.
Transmitters can be powered by two different power supplies: 90 ~ 245VAC or 10-36VDC.
1.2.2 Transmitter Wiring
Once the electronics enclosure has been installed, the flow meter wiring can be connected.
Open the case, you will find the Power board wiring ports, from left to right, are as follows;
Connect to AC power (90-245V), DC power (10-36V), Relay Output, OCT Output, Transducer wiring, 4-20mA
Output, RS232 Output, RS485 Output, Analog Input.
For double-shielded transducer cable: "-" on the Blue wire, "+" on the Brown wire and "shield" on the Black
shield wire.
Refer to the below diagram for specific connection:
Brown
-
Up+
、
DN+
Blue
-
Up-
、
DN-
Black
-
GND
Warning
Wire when it is power-off. Reliable grounding must be taken for the instrument before installation
and use.
Use either AC or DC power supply. Do not connect them both at the same time.
